Quote:
Originally Posted by Allan Kelsey
After some diagnosis, it seems clear that the ARP rod bolt gave way, but whether that is from product failure or some other condition, I don't know.
I went to see the scene of the incident and the short 30 yards from the stop to the point of detonation, isn't enough distance to allow anyone to abuse the motor. Aside from which, the motor has a sensible rev limiter and stronger than factory valve springs that should prevent anyone from detonating the motor under acceleration.
Also, the shop has a strong reputation and I had the shop owner working on my car.
Im quite confident it was not their fault.
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Allan,
I'm very sorry to see this as I know full well how expensive this is to repair.
Unfortunately, these issues don't just "happen" like it was an act of God; its always human factors so I'd strongly recommend having detailed forensics done to find out why this happened and how to prevent a recurrence.
To date, I've never seen a failed ARP rod bolt (and we've installed thousands), its always a bearing/lubrication failure of some kind. It can result from a poorly made bearing, a clearance issue, dirt (especially when its #1 or #6), insufficient oil pressure or volume, and a host of other things. Detonation can trigger this as well so that should not be overlooked!!
Good luck,